Evidence for insulating behavior in the electric conduction of (NH3)K3C60 systems

H. Kitano; R. Matsuo; K. Miwa; A. Maeda; T. Takenobu; Y. Iwasa; T. Mitani

Evidence for insulating behavior in the electric conduction of (NH₃)K₃C₆₀ systems

H. Kitano, R. Matsuo, K. Miwa, A. Maeda, T. Takenobu, Y. Iwasa, T. Mitani

Research output: Contribution to journal › Article

Abstract

The electric conduction of NH₃K_3-xRb_xC₆₀ was studied using the cavity perturbation technique. It was confirmed that (NH₃)K_3-xRb_xC₆₀ was insulating between 4.5 and 250 K. Conductivity of (NH₃)K_3-xRb_xC₆₀ at 200 K was found to be 3-4 orders of magnitude smaller than those of K₃C₆₀ and (NH₃)NaRb₂C₆₀. Difference in conductivity of these materials showed that metal-insulator transition (MIT) in A₃C₆₀ systems was driven by the reduction of lattice symmetry from fcc to fcc.

Original language	English
Pages (from-to)	964011-964014
Number of pages	4
Journal	Physical Review Letters
Volume	88
Issue number	9
Publication status	Published - 2002 Mar 4
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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Kitano, H., Matsuo, R., Miwa, K., Maeda, A., Takenobu, T., Iwasa, Y., & Mitani, T. (2002). Evidence for insulating behavior in the electric conduction of (NH₃)K₃C₆₀ systems. Physical Review Letters, 88(9), 964011-964014.

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title = "Evidence for insulating behavior in the electric conduction of (NH3)K3C60 systems",

abstract = "The electric conduction of NH3K3-xRbxC60 was studied using the cavity perturbation technique. It was confirmed that (NH3)K3-xRbxC60 was insulating between 4.5 and 250 K. Conductivity of (NH3)K3-xRbxC60 at 200 K was found to be 3-4 orders of magnitude smaller than those of K3C60 and (NH3)NaRb2C60. Difference in conductivity of these materials showed that metal-insulator transition (MIT) in A3C60 systems was driven by the reduction of lattice symmetry from fcc to fcc.",

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T1 - Evidence for insulating behavior in the electric conduction of (NH3)K3C60 systems

AU - Kitano, H.

AU - Matsuo, R.

AU - Miwa, K.

AU - Maeda, A.

AU - Takenobu, T.

AU - Iwasa, Y.

AU - Mitani, T.

PY - 2002/3/4

Y1 - 2002/3/4

N2 - The electric conduction of NH3K3-xRbxC60 was studied using the cavity perturbation technique. It was confirmed that (NH3)K3-xRbxC60 was insulating between 4.5 and 250 K. Conductivity of (NH3)K3-xRbxC60 at 200 K was found to be 3-4 orders of magnitude smaller than those of K3C60 and (NH3)NaRb2C60. Difference in conductivity of these materials showed that metal-insulator transition (MIT) in A3C60 systems was driven by the reduction of lattice symmetry from fcc to fcc.

AB - The electric conduction of NH3K3-xRbxC60 was studied using the cavity perturbation technique. It was confirmed that (NH3)K3-xRbxC60 was insulating between 4.5 and 250 K. Conductivity of (NH3)K3-xRbxC60 at 200 K was found to be 3-4 orders of magnitude smaller than those of K3C60 and (NH3)NaRb2C60. Difference in conductivity of these materials showed that metal-insulator transition (MIT) in A3C60 systems was driven by the reduction of lattice symmetry from fcc to fcc.

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